Check first character of each line for a specific value in PowerShell

Question

I am reading in a text file that contains a specific format of numbers. I want to figure out if the first character of the line is a 6 or a 4 and store the entire line in an

Answer 1

Use:

$Fours = @()
$Sixes = @()
GC $file|%{
    Switch($_){
        {$_.StartsWith("4")}{$Fours+=$_}
        {$_.StartsWith("6")}{$Sixes+=$_}
    }
}